CVE-2019-0567

HIGH

ChakraCore - Remote Code Execution via Memory Corruption in Scripting Engine

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 5 public exploits for CVE-2019-0567. PoCs published by Google Security Research, samyuktha_p, ntdelta.

AI-analyzed exploit summary This PoC demonstrates a type confusion vulnerability in JavaScript engines by exploiting the side effects of NewScObjectNoCtor and InitProto opcodes, leading to memory corruption. It overwrites property slots with an arbitrary value (0x1234) to trigger the issue.

Description

A remote code execution vulnerability exists in the way that the Chakra scripting engine handles objects in memory in Microsoft Edge, aka "Chakra Scripting Engine Memory Corruption Vulnerability." This affects Microsoft Edge, ChakraCore. This CVE ID is unique from CVE-2019-0539, CVE-2019-0568.

Exploits (5)

exploitdb WORKING POC VERIFIED
by Google Security Research · textdoswindows
https://www.exploit-db.com/exploits/46203

This PoC demonstrates a type confusion vulnerability in JavaScript engines by exploiting the side effects of NewScObjectNoCtor and InitProto opcodes, leading to memory corruption. It overwrites property slots with an arbitrary value (0x1234) to trigger the issue.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: ChakraCore (Microsoft Edge)
No auth needed
Prerequisites: A vulnerable version of ChakraCore/JavaScript engine
devstral-2 · analyzed Feb 16, 2026 Full analysis →
gitlab WORKING POC
by samyuktha_p · poc
https://gitlab.com/samyuktha_p/cve-2019-0567

This repository contains a functional exploit for CVE-2019-0567, a Microsoft Edge Chakra vulnerability. The exploit demonstrates arbitrary memory read/write capabilities and achieves remote code execution by leveraging a type confusion bug in the Chakra JavaScript engine.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: Microsoft Edge (ChakraCore version 1.11.4)
No auth needed
Prerequisites: ChakraCore version 1.11.4 executable · Windows environment
devstral-2 · analyzed Feb 23, 2026 Full analysis →
nomisec WORKING POC
by ntdelta · poc
https://github.com/ntdelta/chakra-exploit-framework

This repository contains a Chakra exploitation framework targeting CVE-2019-0567, a type confusion vulnerability in the Chakra JavaScript engine. It includes features like abstracted Windows API calls, a custom memory allocator, and ROP chain construction for sandbox escape.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: Microsoft Chakra (Edge Legacy)
No auth needed
Prerequisites: Target running a vulnerable version of Chakra (pre-2019 Edge)
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by NatteeSetobol · poc
https://github.com/NatteeSetobol/CVE-2019-0567-MS-Edge

This repository contains a proof-of-concept exploit for CVE-2019-0567, a type confusion vulnerability in Microsoft Edge. The exploit includes a Python script to convert shellcode into JavaScript format for use in the exploit.

Classification
Working Poc 90%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: Microsoft Edge on Windows 10 build 15063.483
No auth needed
Prerequisites: Target running Microsoft Edge on Windows 10 build 15063.483 · Ability to deliver the exploit via a malicious webpage
devstral-2 · analyzed Feb 16, 2026 Full analysis →
nomisec WORKING POC
by NatteeSetobol · poc
https://github.com/NatteeSetobol/Chakra-CVE-2019-0567

This PoC exploits a type confusion vulnerability in ChakraCore (CVE-2019-0567) to achieve arbitrary code execution via a ROP chain. It leaks memory addresses, constructs a ROP chain, and ultimately executes 'calc.exe' as a demonstration.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Complex
Reliability
Reliable
Target: ChakraCore (Microsoft Edge)
No auth needed
Prerequisites: Target must be running a vulnerable version of ChakraCore · JavaScript execution environment (e.g., Microsoft Edge)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory, VDB Entry exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/46203/
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/106418

Scores

CVSS v3 7.5
EPSS 0.8962
EPSS Percentile 99.6%
Attack Vector NETWORK
CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (3)
microsoft/chakracore
microsoft/edge
nuget/Microsoft.ChakraCore 0 - 1.11.5NuGet
Published Jan 08, 2019
Tracked Since Feb 18, 2026